Hello, I am new to the forum but have been reading it for quite some time.

A few years ago all of my bikes were stolen, and it has taken me until now to start replacing them. I just finished putting together a daily city bike (nashbar branded shogun steel lugged frame with a Shimano 600 groupset on it) and now I am start to build something less far less practical but very pretty and Italian.

The frame is a Barale branded ALAN aluminum (screwed and glued) lugged frame in really exceptional condition I assume is from the lat 80s. The groupset is a Campagnolo c-record with delta brakes (I know these are divisive). Wheels are Campagnolo record hubs (126 rear 100 front) with 700c Araya clinger rims and a campy compatible sun tour 6 speed freewheel/cassette.

I have believe in doing as much mechanical work as possible on your own. I do all the maintenance and some engine building on my motorcycles, and have always worked on my own bicycles, but would not call myself a bike mechanic, and am completely unfamiliar with quirks of vintage Campagnolo. That said I do want to build this bike myself, which is what leads me to these questions.

Cables / cable housing - I have read some conflicting information about this - for the c-record groupset will any modern campagnolo / campy compatible jags etc cable set work? I have read that the ferrules are non standard on some older campagnolo cables.
Chain - what would the recommended chain for this bike be? I am running it as a 6x2 12 speed.
Bottom bracket - what special tools are needed to install the bottom bracket
repacking the hubs - I want to repack the hubs before assembling - what special tools are needed for this.

I think that is about it. Thanks in advance for any help.